Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Macromolecules 28 (1995), S. 5465-5476 
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 63 (1996), S. 117-121 
    ISSN: 1432-0630
    Keywords: PACS: 81.60.B; 79.20.D
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract.  The ablation process of thin copper films on fused silica by picosecond laser pulses is investigated. The ablation area is characterized using optical and scanning electron microscopy. The single-shot ablation threshold fluence for 40 ps laser pulses at 1053 nm has been determinated to F thres=172 mJ/cm2. The ablation rate per pulse is measured as a function of intensity in the range of 5×109 to 2×1011 W/cm2 and changes from 80 to 250 nm with increasing intensity. The experimental ablation rate per pulse is compared to heat-flow calculations based on the two-temperature model for ultrafast laser heating. Possible applications of picosecond laser radiation for microstructuring of different materials are discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 68 (1999), S. 197-201 
    ISSN: 1432-0630
    Keywords: PACS: 36.40; 68.35; 81.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 2 clusters with about 1000 molecules per unit charge are accelerated to up to 120 keV kinetic energy for mask projective surface bombardment. Patterning is achieved via physical as well as chemical surface erosion. Very smooth eroded surfaces result for bulk natural diamond, silicon, and glass. Polycrystalline, strongly faceted CVD diamond films are effectively planarized. Submicron structures with various wall inclinations can be generated. Atomic force microscopy of individual impact structures reveals nanometer-sized hillocks instead of craters. The collective motion of the impacted surface material is considered crucial for the cluster impact-induced nanomodifications. Atomic ion beam lithography is considered for comparison.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 0930-9225
    Keywords: Schlüsselwörter Herzchirurgie – multiples Organversagen (MOF) – akutes Atemnotsyndrom des Erwachsenen (ARDS) – Systemic inflammatory response syndrome (SIRS) – Xanthinderivate ; Key words Cardiac surgery – multiple organ failure (MOF) – adult respiratory distress syndrom (ARDS) – systemic inflammatory response syndrome (SIRS) – xanthine derivatives
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The potential therapeutic effect of intravenous 3,7-dimethyl-1-(5-oxohexyl)xanthine (Pentoxifylline) in patients at risk for developing multiple organ failure following major cardio-thoracic surgery was assessed. Forty petients having APACHE II score values ≥19 at the first postoperative day after major cardio-thoracic surgery were randomized into two groups to receive either placebo (Control; n=25) or intravenous pentoxifylline (1.5 mg/kg/h) treatment (Pentoxifylline; n=15) as an adjunct to standard supportive therapy. The control group patients as compared to pentoxifylline treated patients required a longer period of time of ventilator support (8.3±3.1 days vs. 3.1±0.9 days; p〈0.05), experienced a higher incidence of renal failure (days on dialysis/hemofiltration: 6.8±3.3 vs 1.2±0.8; p〈0.05) and a longer ICU stay (11.4±3.1 vs. 5.2±1.1 days; p〈0.05). Overall mortality was not different between treatment groups. The results of this first clinical pilot study suggest that supplemental intravenous pentoxifylline treatment may decrease the incidence of acute lung injury and renal failure in patients after cardiac surgery.
    Notes: Zusammenfassung In einer ersten klinischen Pilotstudie wurde die Wirksamkeit einer kontinuierlichen intravenösen Infusion des Xanthinderivates Pentoxifyllin zur Reduktion der Inzidenz des akuten Lungenversagens bei Hochrisiko-Patienten nach großen herzchirurgischen Eingriffen untersucht. Unter 816 konsekutiv operierten Patienten wurden 40 Patienten mit einem hohen Risiko für die Entwicklung eines Multiorganversagens anhand des APACHE II Scores (≥19) am ersten postoperativen Tag identifiziert. Die Patienten wurden in zwei Gruppen randomisiert: Standard-Behandlung (Kontrolle n=25) oder Standard-Behandlung+Pentoxifyllin-Therapie (Pentoxifyllin n=15). Primäre Studienendpunkte waren die Dauer der Beatmungspflichtigkeit, die Inzidenz eines akuten Nierenversagens (Dialyse-/Hämofiltrationspflichtigkeit) und die Verweildauer auf der Intensivstation. Die Ergebnisse von 37 der 40 Patienten konnten ausgewertet werden. Die Pentoxifyllin-Therapie (kontinuierliche intravenöse Infusion von 1,5 mg/kg/h) wurde gut toleriert; es wurden keine anhaltenden signifikanten Nebenwirkungen beobachtet. Die Dauer der Beatmung war signifikant kürzer in der Pentoxifyllin-Gruppe (3,1±0,9 die) als in der Kontrollgruppe (8,3+3,1 die, p=0,037) Im Vergleich zu den mit Pentoxifyllin behandelten Patienten trat bei den Kontroll-Patienten häufiger ein therapiepflichtiges Nierenversagen auf (Dialysetage 6,8±3,3 vs. Pentoxifyllin-Gruppe: 1,2+0,8 die, p=0,048). Die Verweildauer auf der Intensivstation war signifikant kürzer bei den Pentoxifyllin-behandelten Patienten (5,2±1,1 vs. 1,4±3,1 die; p〈0,05). Die Gesamtletalität betrug 36% in der Kontrollgruppe und 33% in der Pentoxifyllin-Gruppe und war nicht signifikant unterschiedlich. Zusammengefaßt konnten wir in dieser ersten klinischen Pilotstudie zeigen, daß eine kontinuierliche Infusion von Pentoxifyllin bei Hochrisiko-Patienten nach großen herzchirurgischen Eingriffen die Inzidenz des akuten Lungen-, und Nierenversagens reduzieren kann.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 12612-12623 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 4866-4874 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 1437-1445 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In situ high-angle x-ray diffraction (XRD) measurements during an annealing process and extensive low- and high-angle XRD analysis before and after annealing have been performed to study the influence of annealing on the microstructure of a Ni81Fe19/Ag multilayer film. We concentrate on a detailed description and quantification of induced changes in microstructural properties and on changes in the crystalline structure of sublayers. The observed effects obtained from the high-angle XRD, where superlattice structural refinement and standard powder diffraction methods were used, are utilized to model the changes from microscopic point of view. The low-angle XRD reflectivity measurements were analyzed using a new distorted-wave Born approximation approach which enables to get information about interlayer structure parameters such as interface roughnesses, degree of vertical correlation and lateral correlation length. The presented low-angle and high-angle analysis demonstrates general applicability of x-ray diffraction for complex and quantitative in-situ investigation of structural changes in metallic multilayers during annealing. An effect of lateral scaling for different types of roughness is discussed and a general approach is shown for the case of metallic multilayers. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 25 (1996), S. 25-28 
    ISSN: 1573-1111
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Three amphiphilic β-cyclodextrins in aqueous solution were investigated upon their aggregation behavior. Surface methods, conductivity and scattering methods were used to determine the cmc and radius of gyration of the aggregates. Depending on the cotenside it was possible to shift the cmc to lower concentrations. Above the cmc small spherelike aggregates existed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 276 (1998), S. 368-372 
    ISSN: 1435-1536
    Keywords: Key words Lecithin ; alkylglucoside ; organogel ; polymer-like micelles ; hydrogen bonds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  Jelly-like phases formed by mixtures of soybean lecithin with pure n-dodecyl-β-D-glucopyranoside (DDPG), commercial alkylpoly-glucoside (APG) or n-dodecyl-β-D-lactobionamide (DLBA) in decane in the presence of small amounts of water were studied by oscillating rheology and FT-IR-spectroscopy. It was established that the sugar derivatives can modify the rheological properties of lecithin organogels in different ways. The viscosities, the structural relaxation times and the shear moduli decrease with increasing content of DDPG, while the same parameters increase for DLBA. For APG the modulus is increasing while the viscosity and the structural relaxation time are decreasing. By means of FT-IR spectroscopy and examination of the Cole–Cole-plots of the loss modulus vs. the storage modulus it was shown that the sugar derivatives influence both the strength of the hydrogen bonds between the molecules in the polymer-like micelles and the micellar dynamics.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1433-0385
    Keywords: Key words: Bronchogenic carcinoma ; Residual disease ; Bronchial resection margin ; Prognosis. ; Schlüsselwörter: Bronchialcarcinom ; Residualtumor ; Bronchusresektionsrand ; Prognose.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. Nach Lungenresektion und ipsilateraler Lymphknotendissektion wegen Bronchialcarcinoms verblieb in 88 von 2464 Fällen (3,6 %) mikroskopisch Residualtumor (R1) am zentralen Bronchusresektionsrand. Sieben Patienten entwickelten eine Insuffizienz der Bronchusnaht, 2 weitere eine Nachblutung bzw. eine Herzluxation (Morbidität 8,0 %). Die Hospitalletalität betrug 16,6 %. Todesursachen waren Bronchusnahtinsuffizienz (n = 7), Arrosionsblutung (n = 4), respiratorische Insuffizienz (n = 1) und Pleuraempyem (n = 1). Eine postoperative Bestrahlung wurde bei 43 Patienten durchgeführt. Die mediane Überlebenszeit aller Patienten nach R1-Resektion war 16 Monate gegenüber 37 Monaten nach R0-Resektion (p 〈 0,001). Die Überlebenszeit war unabhängig von Tumorstadium und -histologie, Lokalisation des Residualtumors in der Bronchuswand und einer Nachbestrahlung. Inkomplette Resektionen sind durch intraoperativen Schnellschnitt zu verifizieren. Sofern funktionell vertretbar, sollte in den Stadien I und II eine Nachresektion (R0) angestrebt werden; auch in den Stadien III a und III b ist bei R0-Resektion ein statistisch signifikanter Überlebensvorteil gegenüber R1-Resektion zu verzeichnen, jedoch weniger deutlich als in niedrigeren Stadien.
    Notes: Summary. Residual tumor (R1) was proven at the proximal bronchial resection margin in 88 (3.6 %) of 2464 cases of lung cancer following lung resection and standard lymph node dissection. Postoperative complications (8 %) were: fistula of the bronchial suture line (n = 7), bleeding (n = 2) and heart luxation (n = 1). The in-hospital mortality was 16.6 %. Causes of death were: bronchial fistula (n = 7), erosion of the pulmonary artery (n = 4), respiratory failure (n = 1), and empyema (n = 1). Forty-three patients received postoperative radiation therapy. Median survival of all patients following incomplete resection was 16 months, compared to 37 months following complete resection (P 〈 0.001). Length of survival was independent of tumor stage, histology, site of infiltration and postoperative radiation. In conclusion, in resection for lung cancer clear margins should be verified by intraoperative frozen section. In the case of residual tumor at the bronchial resection margin, wider resection is mandatory in stage I and II if the patient meets the functional criteria. Even in stage III a and III b prognosis is significantly better after complete resection than R1-resection; the difference, however, is smaller than in lower stages.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...